All My Friends: Celebrating the Songs & Voice of Gregg Allman has attracted a long litst of musicians eager to pay homage to the keyboard player from the Southern Rock insitituion named for him and his late brother, Duane. In addition to the current lineup of the Allman Brothers Band and the side projects involving Derek Trucks and Warren Haynes, the January 10 lineup appearing in Gregg's honor at the Fox Theatre in Atlanta will feature performances from John Hiatt, Widespread Panic, Taj Mahal, Jackson Browne, Robert Randolph, Trace Adkins, Eric Church, Martina McBride, Susan Tedeschi and Natalie Cole. Producer-musician Don Was will anchor the house band being assembled for the special occasion.